[Pkg-acpi-devel] Bug#781470: acpi: does acpi talk to Intel RAPL

[наб]

Control: reassign -1 linux-image-amd64 3.19.3-1~exp1
(note experimental kernel from 2015)

On Sun, Mar 29, 2015 at 11:42:23PM +0530, Ritesh Raj Sarraf wrote:
> On my Lenovo Yoga 2 13, the acpi temperature outputs are bogus.
> 
> rrs at learner:~$ acpi -V
> Battery 0: Discharging, 79%, 06:09:10 remaining
> Battery 0: design capacity 4225 mAh, last full capacity 4156 mAh = 98%
> Adapter 0: off-line
> Thermal 0: ok, 29.8 degrees C
> Thermal 0: trip point 0 switches to mode critical at temperature 105.0
> degrees C
> Thermal 0: trip point 1 switches to mode passive at temperature 108.0
> degrees C
> Thermal 1: ok, 27.8 degrees C
> Thermal 1: trip point 0 switches to mode critical at temperature 105.0
> degrees C
> Thermal 1: trip point 1 switches to mode active at temperature 100.0
> degrees C
> Thermal 1: trip point 2 switches to mode active at temperature 55.0
> degrees C
> Cooling 0: x86_pkg_temp no state information available
> Cooling 1: intel_powerclamp no state information available
> Cooling 2: Processor 0 of 10
> Cooling 3: Processor 0 of 10
> Cooling 4: Processor 0 of 10
> Cooling 5: Processor 0 of 10
> Cooling 6: Fan 1 of 1
> Cooling 7: Fan 1 of 1
> Cooling 8: Fan 1 of 1
> Cooling 9: Fan 1 of 1
> Cooling 10: Fan 1 of 1
> 23:39 ♒♒♒   ☺    
> 
> While reading up on Intel RAPL I wonder if acpi supports it ?
No, acpi only reads the standard
  /sys/class/{power_supply/{BAT,AC},thermal/{thermal_zone,cooling_device}}
interfaces that Linux exposes.
(And /proc/acpi/{battery,ac_adapter,thermal_zone,fan}
 I suppose but that's nigh-undocumented and very much obsolete x86 magic
 that's at best equivalent to the standard interface.)

If your /sys/class/thermal/ has an invalid read-out, this is a Linux bug.

> -- System Information:
> Debian Release: 8.0
>   APT prefers testing
>   APT policy: (990, 'testing'), (500, 'unstable'), (101, 'experimental')
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
> 
> Kernel: Linux 3.19.3-rc5 (SMP w/4 CPU cores)
> Locale: LANG=en_IN.utf8, LC_CTYPE=en_IN.utf8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: systemd (via /run/systemd/system)
> 
> Versions of packages acpi depends on:
> ii  libc6  2.19-15
> 
> acpi recommends no packages.
> 
> acpi suggests no packages.
> 
> -- no debconf information
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